If you keyboard is wireless then there may be a driver problem with the CD version. This version is Linux and may not have a suitable driver for your wireless keyboard. There is no way of adding a driver.

The WinPE rescue CD is Windows based and uses Windows drivers and has a better selection of drivers available. You can also add drivers when you build it or load them when you run it.

If the problem is due to the keyboard being wireless you can attach an inexpensive wired keyboard for use with the program. They are very cheap these days if you don't have one.

Paragon is a reliable product but like all software there are things that some people don't like about it but these things are usually in the user-interface not the core backup and restore functions which are reliable.

The only thing I can suggest apart from contacting Paragon support or waiting for somebody else to answer your question is to try a different keyboard. Is you keyboard one of the fancy ones with a lot of clever buttons? If so, try a simple plain one.